PHP - Html Transfer Code 超文本转换码，市面上这东西已经很滥（多）了，不过是这几天自己实践了一下~~~~
支持 多重嵌套 和 同标签嵌套，混合高亮显示（还有一点小问题）
自我感觉便于修改和扩充~~~~~~~~~~~
<?php
/**************************************************
* *
* Name : Functions 4 Html Transfer Code (HTC) *
* Version : 1.3.2 *
* Author : Windy_sk *
* Create : 2003-09-03 *
* Modified: 2003-12-17 *
* Email : [email protected] *
* HomePage: None (Maybe Soon) *
* Notice : U Can Use & Modify it freely, *
* BUT PLEASE HOLD THIS ITEM. *
* *
**************************************************/
$htc_list = array(
"B" => "<b>\\1</b>",
"I" => "<i>\\1</i>",
"U" => "<u>\\1</u>",
"CENTER" => "<center>\\1</center>\n",
"URL" => "<a href='\\1'>\\1</a>",
"EMAIL" => "<a href='mailto:\\1'>\\1</a>",
"IMAGE" => "<br /><table align=center width='100%'><tr><td align='center'><img src='\\1' border='0' onload='org_w=this.offsetWidth;this.style.width=10;this.style.width=(org_w>parseInt(this.offsetParent.offsetWidth))?this.offsetParent.offsetWidth:org_w' onclick='window.open(this.src)' style='cursor:pointer' /></td></tr></table><br />\n",
"DOWNLOAD" => "exec:get_dl_html('\\1')",
"LIST" => "exec:get_list_html('\\1')",
"QUOTE" => "<center><table border='0' width='90%' cellspacing='0' cellpadding='0'><tr><td> 引用：</td></tr><tr><td><table width='100%' class='quote'><tr><td>\\1</td></tr></table></td></tr></table></center>\n",
"IFRAME" => "<table align=center><tr><td><iframe src='\\1' frameborder='0' allowtransparency='true' scrolling='yes' width='400' height='300'></iframe></td></tr></table>\n",
"MOVE" => "<center><marquee width='90%' behavior='alternate' scrollamount='3'>\\1</marquee><center>\n",
"GLOW" => "<table><tr><td class='glow'>\\1</td></tr></table>\n",
"SHADOW" => "<table><tr><td class='shadow'>\\1</td></tr></table>\n",
"DROPSHADOW" => "<table><tr><td class='dropshadow'>\\1</td></tr></table>\n",
"GBMUSIC" => "<bgsound src='\\1' loop='-1'>\n",
"MUSIC" => "<TABLE cellSpacing=0 cellPadding=0 align=center border=0><TBODY><TR><TD vAlign=top colSpan=3><EMBED name=music_rm align=top src='\\1' width='200' height='30' type='audio/x-pn-realaudio-plugin' console='ClipNN' loop='false' autostart='false' controls='ControlPanel' border='1' vspace='0' hspace='0'></EMBED><br><STRONG><A href='\\1'>Download The Music</A></STRONG></TD></TR></TBODY></TABLE>\n",
"FLASH" => "<table align=center><tr><td><object classid='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000' codebase='http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0' width='400'><param name='movie' value='\\1'><param name='quality' value='high'><embed src='\\1' quality='high' pluginspage='http://www.macromedia.com/go/getflashplayer' type='application/x-shockwave-flash' width='32' height='32'></embed></object></td></tr></table>\n",
"SHOCKWAVE" => "<table align=center><tr><td><object classid='clsid:166B1BCA-3F9C-11CF-8075-444553540000' codebase='http://download.macromedia.com/pub/shockwave/cabs/director/sw.cab#version=8,5,0,0' width='400'><param name='src' value='\\1'><embed src='\\1' pluginspage='http://www.macromedia.com/shockwave/download/' width='400'></embed></object></td></tr></table>\n",
"QUICKTIME" => "<table align=center><tr><td><embed src='\\1' width='400' height='300' autoplay='true' loop='false' controller='true' playeveryframe='false' cache='false' scale='TOFIT' bgcolor='#000000' kioskmode='false' targetcache='false' pluginspage='http://www.apple.com/quicktime/'><br><STRONG><A href='\\1'>Download The Movie</A></STRONG></td></tr></table>\n",
"REALPLAYER" => "<TABLE cellSpacing=0 cellPadding=0 align=center border=0><TBODY><TR><TD vAlign=top colSpan=3><EMBED name=movie_rm align=top src='\\1' width='400' height='300' type='audio/x-pn-realaudio-plugin' console='ClipNN' loop='true' autostart='true' controls='ImageWindow,ControlPanel' border='1' vspace='0' hspace='0'></EMBED><br><STRONG><A href='\\1'>Download The Movie</A></STRONG></TD></TR></TBODY></TABLE>\n",
"MEDIAPLAYER" => "<table align=center><tr><td><object classid='clsid:22d6f312-b0f6-11d0-94ab-0080c74c7e95' width='400'><param name='ShowStatusBar' value='-1'><param name='Filename' value='\\1'><embed type='application/x-oleobject' codebase='http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=5,1,52,701' flename='mp' src='\\1' width='400'></embed></object><br /><STRONG><A href='\\1'>Download The Movie</A></STRONG></td></tr></table>\n",
"VOTE" => "exec:get_vote_html('\\1')",
);
$htc_list_att = array(
"ALIGN" => "<div align='\\1'>\\2</div>\n",
"URL" => "<a href='\\1'>\\2</a>",
"EMAIL" => "<a href='mailto:\\1'>\\2</a>",
"IMAGE" => "<br /><table align=center width='100%'><tr><td><img alt='\\1' src='\\2' border='0' onload='org_w=this.offsetWidth;this.style.width=10;this.style.width=(org_w>parseInt(this.offsetParent.offsetWidth))?this.offsetParent.offsetWidth:org_w;' onclick='window.open(this.src)' style='cursor:pointer' /></td></tr></table><br />\n",
"FONTFACE" => "<span style='FONT-FAMILY:\\1'>\\2</span>",
"FONTSIZE" => "<span style='font-size:\\1'>\\2</span>",
"FONTCOLOR" => "<span style='color:\\1'>\\2</span>",
"DOWNLOAD" => "exec:get_dl_html('\\1', '\\2')",
"LIST" => "exec:get_list_html('\\2','\\1')",
"ATTACH" => "exec:get_attach_html('\\2', '\\1')",
"VOTE" => "exec:get_vote_html('\\1','\\2')",
);
$htc_list_spl = array(
"PHP" => "exec:get_highlight_html('\\1', 'php')",
"CSS" => "exec:get_highlight_html('\\1', 'css')",
"HTML" => "exec:get_highlight_html('\\1', 'html')",
"SCRIPT" => "exec:get_highlight_html('\\1', 'script')",
"CODE" => "exec:get_code_html('\\1')",
"EXECUTE" => "\\1",
);

function get_highlight_html($str, $type = "php") {
$type = strtolower($type);
$type_func = $type."_highlight";
$type = strtoupper($type);
$result = "<center><table border='0' width='90%' cellspacing='0' cellpadding='0'>";
if(!function_exists($type_func)) $type_func = "php_highlight";
$result .= "
<tr><td>高亮显示 <font color='red'>{$type}</font> 代码：</td></tr>
<tr><td>
<table width='100%' class='quote'><tr><td>
".$type_func($str)."
</td></tr></table>
".($type=="HTML"?"<input type='button' value='运行代码' onclick=\"str=this.parentNode.firstChild.innerText;if(str==undefined){alert('Execute Codez Failed !');return;}code_win=window.open('about:blank');doc=code_win.document;doc.open();doc.write(str);doc.close();code_win.focus();\" />":"")."
<input type='button' value='复制代码' onclick=\"try{window.clipboardData.setData('text',this.parentNode.firstChild.innerText);alert('Save Codez To The Clipboard !');}catch(e){alert('Codez Copy Failed !');}\">
<input type='button' value='保存代码' onClick=\"try{str=this.parentNode.firstChild.innerText;code_win=window.open('about:blank','_blank','top=10000');code_win.document.writeln(str);code_win.document.execCommand('saveas','','code.html');code_win.close();}catch(e){alert('Codez Save Failed !');}\">
</td></tr>
</table></center>
";
return $result;
}

function php_highlight($str) {
$str = str_replace("\\\"","\"",$str);
return highlight_string($str, true);
}

function css_highlight($str, $nl = true) {
$color_1 = "red";
$color_2 = "green";
$color_3 = "blue";
$str = str_replace("\\\"","\"",$str);
$str = str_replace("\r", "", $str);
preg_match_all("/[\\\*\.\w#: ]+\{[^\{\}]+\}/", $str, $arr_css);
$arr_css = $arr_css[0];
for($i=0; $i<count($arr_css); $i++) {
$head = preg_replace("/([\\\*\.\w#: ]+\{)[^\{\}]+\}/", "<font color='{$color_1}'>\\1</font>".($nl?"<br />\n":""), $arr_css[$i]);
$unit = preg_replace("/[\\\*\.\w#: ]+\{([^\{\}]+)\}/", "\\1", $arr_css[$i]);
$unit_list = preg_split("/;\s*/", $unit);
$unit = "\n";
for($j=0; $j<count($unit_list); $j++) {
if(strlen($unit_list[$j])>0)
$unit .= " " . preg_replace("/\s*([\w\-]+)\s*:\s*(.*)/e", "'<font color=\'{$color_2}\'>\\1</font> : <font color=\'{$color_3}\'>'.htmlspecialchars('\\2').'</font> ; '", $unit_list[$j]) . ($nl?"<br />\n":"\n");
}
$arr_css[$i] = $head . $unit . "<font color='{$color_1}'>}</font>";
}
return join(($nl?"\n<br /><br />\n":"\n\n"), $arr_css);
}

function script_highlight_note($str, $mode = true) {
$color_note = "gray";
$str = str_replace("\\\"","\"",$str);
$str = preg_replace("/<font color='[a-z]+'>(.*)<\/font>/isU", "\\1", $str);
$str = $mode?"/*{$str}*/":"//{$str}";
return "<font color='{$color_note}'>{$str}</font>";
}

function script_highlight($str, $nl = true) {
$color_1 = "red";
$color_2 = "blue";
$color_3 = "brown";
$color_4 = "green";
$str = str_replace("\\\"","\"",$str);
$str = htmlspecialchars($str);
$str = str_replace("=","&equal;",$str);
$str = str_replace("|","&vertical;",$str);
$keywords = array(
"{$color_1}" => array("null", "true", "false", "NaN"),
"{$color_2}" => array("var", "for", "if", "else", "switch", "case", "function", "loop", "continue", "break", "<", ">", "!&equal;", "&equal;&equal;", "&equal;", "&&", "&vertical;&vertical;"),
"{$color_3}" => array("window", "self", "this", "event", "document", "opener", "Navigator", "Math", "Array", "String", "Object", "Function", "Number"),
);
foreach($keywords as $key => $value) {
for($i=0; $i<count($value); $i++) {
$str = preg_replace("/(\W)(".$value[$i].")(\W)/", "\\1<font color='{$key}'>\\2</font>\\3", $str);
}
}
$str = preg_replace("/(\.|\s)([a-z]+)\(/i" ,"\\1<font color='{$color_4}'>\\2</font>(", $str);
$str = preg_replace("/\.(\w+)(?!\()/i" ,".<font color='{$color_3}'>\\1</font>", $str);
$str = preg_replace("/\/\/([^\n]*)\n/e" ,"script_highlight_note('\\1', false)", $str);
$str = preg_replace("/\/\*(.*?)\*\//es" ,"script_highlight_note('\\1')", $str);
$str = str_replace("\t", " ", $str);
$str = str_replace("&equal;","=",$str);
$str = str_replace("&vertical;","|",$str);
return $nl?nl2br($str):$str;
}

function html_highlight_attr($att) {
$color_1 = "red";
$color_2 = "brown";
$color_3 = "black";
$att = str_replace("\\\"","\"",$att);
$att = preg_replace("/=\s*('|\")([^'\"]+)\\1/eU","'=\\1'.preg_replace('/\s+/','|:s:|','\\2').'\\1'",$att);
$att = str_replace("\\\"","\"",$att);
$att .= " ";
preg_match_all("/[a-z:\/\-]+(=(['\"]?).*[^\\\\]{1}\\2?)?\s+/iU", $att, $att_list);
$att_list = $att_list[0];
for($i=0; $i<count($att_list); $i++) {
if(empty($att_list[$i])) continue;
$att_list[$i] = trim($att_list[$i]);
$att_list[$i] = preg_replace("/([^=]+)([=]?)(['\"]?)(.*)(\\3)/", "<font color='{$color_2}'>\\1</ font><font color='{$color_1}'>\\2</ font>\\3<font color='{$color_3}'>\\4</ font>\\3", $att_list[$i]);
}
return str_replace("|:s:|", " ", join(" ", $att_list));
}

function html_highlight($str) {
$color_1 = "red";
$color_2 = "blue";
$color_3 = "gray";
$str = str_replace("\\\"","\"",$str);
preg_match_all("/<script([^>]*)>(.*)<\/script>/isU", $str, $arr_tmp);
$arr_script = $arr_tmp[0];
for($i=0; $i<count($arr_script); $i++) {
$str = str_replace($arr_script[$i], "
::script_{$i}::
", $str);
$arr_script[$i] = preg_replace("/<script([^>]*)>(.*)<\/script>/iseU", "'<font color=\'{$color_2}\'><SCRIPT '.html_highlight_attr('\\1').'></font><br />'.script_highlight(str_replace('\\\"','\"','\\2'), false).'<font color=\'{$color_2}\'></SCRIPT></font>'", $arr_script[$i]);
}
$str = preg_replace("/(<textarea[^>]*>)(.*)(<\/textarea>)/ieU" ,"'\\1'.htmlspecialchars('\\2').'\\3'", $str);
$str = preg_replace("/<!\-\-(.*)\-\->/seU" ,"'<!--'.htmlspecialchars('\\1').'-->'", $str);
$str = preg_replace("/<style([^>]*)>(.*)<\/style>/isU" ,"<!style\\1>\\2</style!>", $str);
$str = preg_replace("/<([a-z:]+)\s*(.*?)( \/|\/)?>/ise" ,"'<font color=\'{$color_2}\'><\\1 '.html_highlight_attr('\\2').'\\3></ font>'", $str);
$str = preg_replace("/<(\/[a-z:]+)>/i" ,"<font color='{$color_2}'><\\1></font>", $str);
$str = preg_replace("/<(!\-\-.*\-\-)>/sU" ,"<font color='{$color_3}'><\\1></font>", $str);
$str = preg_replace("/<!style([^>]*)>(.*)<\/style!>/iseU" ,"'<font color=\'{$color_2}\'><STYLE '.html_highlight_attr('\\1').'></font><br />'.css_highlight(str_replace('\\\"','\"','\\2'), false).'<br /><font color=\'{$color_2}\'></STYLE></font>'", $str);
for($i=0; $i<count($arr_script); $i++) {
$str = str_replace("
::script_{$i}::
", $arr_script[$i], $str);
}
$str = str_replace("</ font>", "</font>", $str);
$str = str_replace("</ b>", "</b>", $str);
$str = str_replace(" >", ">", $str);
$str = str_replace(" "," ",$str);
$str = str_replace("\t"," ",$str);
return nl2br($str);
}

function get_file_pic($filename) {
global $root_path;
$ext = str_replace(".","",strrchr($filename,"."));
$pic = $root_path."/upload/tech/20091012/20091012013122_621bf66ddb7c962aa0d22ac97d69b793.gif";
return file_exists($pic)?"$pic":$root_path."/upload/tech/20091012/20091012013122_1905aedab9bf2477edc068a355bba31a.gif";
}

function get_dl_html($filename, $str = "") {
return "<img src='".get_file_pic($filename)."' border='0'> <a href='$filename'>".(empty($str)?basename($filename):$str)."</a>";
}

function get_attach_html($filename, $id) {
return "<img src='".get_file_pic($filename)."' border='0'> <a href='attach_manage.php?method=download&id=$id'>$filename</a>";
}

function get_vote_html($vote_idx, $message = ""){
global $db_host, $db_user, $db_pass, $db_name;
$db = new DB_Manager($db_host, $db_user, $db_pass);
$db->Connect();
$db->SelectDB($db_name);
$db->Query("select * from mnms_poll where id=".$vote_idx);
$record = $db->GetRS();
$str = "";
$db->close();
unset($db);
if($record) {
$username = "dummy";
$if_vote = !(strpos($record[vote_user], "|{$username}|")===false)
strpos($record[vote_user], "|".GetIp()."|");
$str .= "
<fieldset>
<legend align='left' color=black>".(empty($message)?$record[vote_title]:$message)."</legend>
<form name='poll' action='poll_manage.php?method=vote' method='post'>
<table width='90%' align='center'>";
$vote_list = split("::",$record[vote_list]);
$vote_count = split("::",$record[vote_count]);
$vote_users = count(split("\n", $record[vote_user])) - 1;
$vote_sum = array_sum($vote_count);
$str .= "
<tr><td colspan='2'> 目前共有 <font color='red'>{$vote_users}</font> 人参与了本投票 </td></tr>";
if($vote_sum==0) $vote_sum = 1;
for($i=0; $i<count($vote_list); $i++) {
$str .= "
<tr><td>".($if_vote?"► ":"<input type='hidden' value='".$vote_count[$i]."' name='vote_count[]'><input type='".($record[vote_multi]=='Y'?"checkbox":"radio")."' name='vote[]' value='{$i}'>").htmlspecialchars($vote_list[$i])."</td><td width='400'><img src='images/bars/bar".($i+1).".gif' width='".ceil($vote_count[$i]*300/$vote_sum)."' height='10'> 占总票数的 <font color='#990000'>".ceil((int)$vote_count[$i]*100/$vote_sum)."%</font></td></tr>\n";
}
$str .= "<tr><td colspan='2' align='center'><br>".($if_vote?"<b>您已经投过票了！</b>":"<input type='hidden' value='{$record[id]}' name='id'><input type='Submit' value=' 确 定 ' name='Submit'> <input type='reset' value=' 重 置 ' name='reset'>")."</td></tr>";
$str .= "
</table>
</form>
</fieldset>";
}
return $str;
}

function get_code_html($str) {
$str = str_replace("\\\"","\"",$str);
return "
<table align='center' width='550'>
<tr><td><textarea cols='80' rows='10' name=Code>".htmlspecialchars($str)."</textarea><br>
<input type='button' value='运行代码' onClick=\"str=this.parentNode.firstChild.value;code_win=window.open('about:blank');doc=code_win.document;doc.open();doc.write(str);doc.close();code_win.focus();\">
<input type='button' value='复制代码' onclick=\"try{window.clipboardData.setData('text',this.parentNode.firstChild.value);alert('Save Codez To The Clipboard !');}catch(e){alert('Please Copy The Selected Codez !');this.parentNode.firstChild.select();}\">
<input type='button' value='保存代码' onClick=\"str=this.parentNode.firstChild.value;code_win=window.open('about:blank','_blank','top=10000');code_win.document.writeln(str);code_win.document.execCommand('saveas','','code.html');code_win.close();\">
（提示:可以先修改部分代码）
</td></tr>
</table>";
}

function get_list_html($content, $type = "") {
$content = preg_replace("/(<br \/>)?[\r\n]+/", "\n", $content);
$content = preg_replace("/[\r\n]+/", "\n", $content);
$content = preg_replace("/^[\n]*(.*)[\n]*$/m", "\\1", $content);
$content = str_replace("\n", "</li><li>", $content);
$content = "<ul type='$type'><li>$content</li></ul>\n";
return $content;
}

function html_trans($str) {
$search = array("&", "'", "\"", "<", ">", " ", "\t");
$replace = array("&", "'", """, "<", ">", " ", " ");
return nl2br(str_replace($search, $replace, $str));
}

function link_url($str) {
$str = preg_replace("/((http|ftp|mms|rtsp|pnm|mailto):\/\/[\w@:\.\/\?=&;#\-%]+)/i", "<a href='\\1' target='_blank'>\\1</a>", $str);
$str = preg_replace("/(\w+@(\w+\.)+[\w]{2,3})/i", "<a href='mailto:\\1'>\\1</a>", $str);
$str = preg_replace("/(href|src)='<a href=('.+')>[^<]+<\/a>'/iU", "\\1=\\2", $str);
return $str;
}

function htc2html_loop($str) {
global $htc_list, $htc_list_att;
foreach($htc_list as $key => $value) {
if(substr($value,0,5)=="exec:"){
$str = preg_replace("/\[$key\]((.(?!\[$key(\s?=\s?([^\]]+))?\]))*)\[\/$key\]/iexsU", substr($value,5), $str);
} else {
$str = preg_replace("/\[$key\]((.(?!\[$key(\s?=\s?([^\]]+))?\]))*?)\[\/$key\]/ixsU", "$value", $str);
}
}
foreach($htc_list_att as $key => $value) {
if(substr($value,0,5)=="exec:"){
$str = preg_replace("/\[$key\s?=\s?([^\]]+)\]((.(?!\[$key(\s?=\s?([^\]]+))?\]))*)\[\/$key\]/iesxU", substr($value,5), $str);
} else {
$str = preg_replace("/\[$key\s?=\s?([^\]]+)\]((.(?!\[$key(\s?=\s?([^\]]+))?\]))*)\[\/$key\]/isxU", "$value", $str);
}
}
return $str;
}

function htc2html($str, $trans_url = true , $loop = 3) {
global $htc_list_spl;
$str = preg_replace("/(\[\w+\])\s*/ixs","\\1",$str);
$str = preg_replace("/\s*(\[\/\w+\])/ixs","\\1",$str);
foreach($htc_list_spl as $key => $value) {
preg_match_all("/\[$key\](.*)\[\/$key\]/ixsU", $str, $arr_tmp);
$arr_spl[$key] = $arr_tmp[0];
for($i=0; $i<count($arr_spl[$key]); $i++) {
$str = str_replace($arr_spl[$key][$i], "
::{$key}_{$i}::
", $str);
if(substr($value,0,5)=="exec:"){
$arr_spl[$key][$i] = preg_replace("/\[$key\](.*)\[\/$key\]/iexsU", substr($value,5), $arr_spl[$key][$i]);
} else {
$arr_spl[$key][$i] = preg_replace("/\[$key\](.*)\[\/$key\]/ixsU", "$value", $arr_spl[$key][$i]);
}
}
}
$str = html_trans($str);
while($loop-- > 0) {
if(!preg_match("/\[(\w+)(\s?=\s?([^\]]+))?\](.*)\[\/\\1\]/isU", $str)) break;
$str = htc2html_loop($str);
}
if($trans_url) $str = link_url($str);
foreach($htc_list_spl as $key => $value) {
for($i=0; $i<count($arr_spl[$key]); $i++) {
$str = str_replace("
::{$key}_{$i}::
", $arr_spl[$key][$i], $str);
}
}
return $str;
}
?>

使用方法：
echo htc2html($str);
OK 了~~~~~~~~

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